jsPerf.app is an online JavaScript performance benchmark test runner & jsperf.com mirror. It is a complete rewrite in homage to the once excellent jsperf.com now with hopefully a more modern & maintainable codebase.

jsperf.com URLs are mirrored at the same path, e.g:

https://jsperf.com/negative-modulo/2

Can be accessed at:

https://jsperf.app/negative-modulo/2

JS isArray Comparison (v3)

Revision 3 of this benchmark created on May 25, 2015

Setup

var a = ["word1","more words"];

Test runner

Ready to run.

Testing in
Test		Ops/sec
Object.prototype.toString	`Object.prototype.toString.call(a) === '[object Array]';`	ready
Array.isArray	`Array.isArray(a);`	ready
instanceof	`a instanceof Array`	ready
.constructor === Array	`a.constructor === Array`	ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

Revision 1: published by Mark on April 28, 2015
Revision 2: published on May 2, 2015
Revision 3: published on May 25, 2015
Revision 4: published on June 13, 2015
Revision 5: published by Timoteo on August 5, 2015
Revision 6: published on August 27, 2015
Revision 7: published by Dom on September 15, 2015
Revision 8: published by Dom on September 15, 2015